Frontiers in Immunology (Dec 2024)

Impact of COVID-19, lockdowns and vaccination on immune responses in a HIV cohort in the Netherlands

  • Twan Otten,
  • Twan Otten,
  • Xun Jiang,
  • Xun Jiang,
  • Manoj Kumar Gupta,
  • Manoj Kumar Gupta,
  • Nadira Vadaq,
  • Maartje Cleophas-Jacobs,
  • Jéssica C. dos Santos,
  • Albert Groenendijk,
  • Albert Groenendijk,
  • Wilhelm Vos,
  • Wilhelm Vos,
  • Louise E. van Eekeren,
  • Marc J. T. Blaauw,
  • Marc J. T. Blaauw,
  • Elise M.G. Meeder,
  • Elise M.G. Meeder,
  • Elise M.G. Meeder,
  • Olivier Richel,
  • Vasiliki Matzaraki,
  • Jan van Lunzen,
  • Jan van Lunzen,
  • Leo A. B. Joosten,
  • Leo A. B. Joosten,
  • Yang Li,
  • Yang Li,
  • Yang Li,
  • Cheng-Jian Xu,
  • Cheng-Jian Xu,
  • Andre van der Ven,
  • Mihai G. Netea,
  • Mihai G. Netea

DOI
https://doi.org/10.3389/fimmu.2024.1459593
Journal volume & issue
Vol. 15

Abstract

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IntroductionDuring the COVID-19 pandemic, major events with immune-modulating effects at population-level included COVID-19 infection, lockdowns, and mass vaccinations campaigns. As immune responses influence many immune-mediated diseases, population scale immunological changes may have broad consequences.MethodsWe investigated the impact of lockdowns, COVID-19 infection and vaccinations on immune responses in the 2000HIV study including 1895 asymptomatic virally-suppressed people living with HIV recruited between October 2019 and October 2021. Their inflammatory profile was assessed by targeted plasma proteomics, immune responsiveness by cytokine production capacity of circulating immune cells, and epigenetic profile by genome-wide DNA methylation of immune cells.ResultsPast mild COVID-19 infection had limited long-term immune effects. In contrast, COVID-19 vaccines and especially lockdowns significantly altered both the epigenetic profile in immune cells at DNA methylation level and immune responses. Lockdowns resulted in a strong overall exaggerated immune responsiveness, while COVID-19 vaccines moderately dampened immune responses. Lockdown-associated immune responsiveness alterations were confirmed in 30 healthy volunteers from the 200FG cohort that, like the 2000HIV study, is part of the Human Functional Genomics Project.DiscussionOur data suggest that lockdowns have unforeseen immunological effects. Furthermore, COVID-19 vaccines have immunological effects beyond anti-SARS-CoV-2 activity, and studies of their impact on non-COVID-19 immune-mediated pathology are warranted.

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